Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 736 · 40 questions

What you do (Find the experiment, use the idea): 1. Read the question and find its experiment. 2. Use that experiment’s idea — acid and base, indicator colours, chemical change, what seeds and yeast need, transpiration, crystals or filtering. 3. For a fair-test question, find what is changed, kept the same and measured. 4. For a safety question, choose what keeps everyone safe.

1. 1.🫧 Which of these is neutral? (a) soap solution (b) curd (c) baking soda water (d) plain water
2. 2.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: how hard we shake is the one thing we change. (a) False (b) True
3. 3.🎈 What blows up the balloon in the yeast experiment? (a) air from outside (b) smoke (c) steam (d) carbon dioxide gas
4. 4.🔍 Which is the odd one out? (a) warmth (b) air (c) water (d) sugar
5. 5.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: how dark the writing is is what we measure. (a) True (b) False
6. 6.🫧 Is vinegar an acid, a base or neutral? (a) a base (b) an acid (c) neutral
7. 7.True or false: a balloon is not needed for the secret lemon message. (a) False (b) True
8. 8.🧺 Do we need a few hours for the leafy bag test? (a) needed (b) not needed
9. 9.🫧 What do you see when baking soda meets vinegar? (a) it turns to ice (b) it glows in the dark (c) nothing at all (d) lots of fizzy bubbles
10. 10.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the kind of plant”? (a) we change it (b) we measure it (c) we keep it the same
11. 11.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) a grown-up (c) the youngest child (d) a friend who is running
12. 12.🧺 Do we need a mirror for the yeast balloon? (a) not needed (b) needed
13. 13.🪴 Which of these is a job of the roots? (a) carry water upward (b) take in water from soil (c) hold up the leaves (d) make food in sunlight
14. 14.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a balloon (b) turmeric powder (c) soap solution (d) white paper strips
15. 15.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
16. 16.🫗 How do we separate mud from water? (a) evaporating (b) filtering (c) winnowing (d) handpicking
17. 17.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
18. 18.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) cooking an egg (c) folding paper (d) browning lemon ink
19. 19.🧺 Which of these is needed for the leafy bag test? (a) turmeric powder (b) a clear plastic bag (c) a mirror (d) yeast
20. 20.🛟 Where should you keep the crystal dish while it dries? (a) in a busy doorway (b) safe from small children (c) on the edge of a table (d) next to the baby
21. 21.🔍 Which is the odd one out? (a) reading the message (b) writing the message (c) plugging in the iron (d) dipping the cotton bud
22. 22.🔮 Predict: a plant gets no water for many days in summer. What happens? (a) it flowers more (b) it turns blue (c) it wilts and droops (d) it grows faster
23. 23.🧺 Which of these is needed for the leafy bag test? (a) a potted plant (b) yeast (c) vinegar (d) a mirror
24. 24.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is what we measure. (a) True (b) False
25. 25.🛟 What should you do if vinegar splashes in your eye? (a) add baking soda (b) ignore it (c) rub it hard (d) rinse with clean water
26. 26.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) a white party dress (c) your best clothes (d) an old shirt or apron
27. 27.⚖️ Fair test — do seeds need water to sprout? What do we do with “the same bowls”? (a) we change it (b) we measure it (c) we keep it the same
28. 28.True or false: time is something yeast needs. (a) False (b) True
29. 29.🫧 Which gas fills the balloon in the baking soda and vinegar experiment? (a) oxygen (b) helium (c) carbon dioxide (d) hydrogen
30. 30.🧺 Which of these is needed for the yeast balloon? (a) sugar (b) a mirror (c) a comb (d) turmeric powder
31. 31.🧺 Do we need a funnel or spoon for the fizzy balloon? (a) needed (b) not needed
32. 32.True or false: sugar is not needed for the yeast balloon. (a) False (b) True
33. 33.🌱 Which of these does not sprout? (a) wet seeds by a window (b) wet seeds in the dark (c) seeds in the freezer (d) seeds on wet cotton
34. 34.🫗 How do we separate salt from sea water? (a) sieving (b) winnowing (c) filtering (d) evaporating
35. 35.📘 Leaves have tiny holes that let out water vapour. What are they called? (a) petals (b) stomata (c) roots (d) veins
36. 36.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is kept the same? (a) the same bottle (b) size of the balloon (c) spoons of baking soda
37. 37.🛟 Why is a plastic jar a good choice for shaking? (a) it is magnetic (b) it will not break (c) it is heavier (d) it is hotter
38. 38.True or false: reading the message is a job a child can do. (a) False (b) True
39. 39.🧂 Which of these dissolves in water? (a) cooking oil (b) chalk powder (c) small pebbles (d) baking soda
40. 40.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed

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